Bioshock 2: The Protector Trials Available Now

2K games has announced that Bioshock 2: The Protector Trials is now available on the XBL Marketplace and PlayStation Network. The pack, which is the first single player expansion for the game, will put players back in the shoes of a Big Daddy as they attempt to protect little sisters from splicers as they try to harvest ADAM from corpses.

In particular, the pack includes:

Six new maps: three unique difficulty levels, each based on locales from BioShock 2;